Plug



FIG. 1 is a perspective view of one side, one end and the bottom of a plug showing my new design;

FIG. 2 is a side elevational view off said one side, the opposite side being a mirror image thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is an end view of said one end thereof; and,

FIG. 6 is an end elevational view of the opposite end thereof. 

The ornamental design for a plug, as shown and described. 